18" .223 Wylde Spiral Fluted Midlength M-LOK Upper Assembly - 25618

18″ .223 Wylde Spiral Fluted Midlength M-LOK Upper Assembly

No shortcuts—just sub-MOA performance and top-tier build quality.

The 18″ .223 Wylde Spiral Fluted Mid-length M-LOK Upper Assembly is crafted for shooters who demand tight tolerances, premium materials, and guaranteed precision. Built around a forged mil-spec upper receiver, this upper pairs American-made M-LOK handguards with an 18″ stainless spiral fluted barrel chambered in versatile .223 Wylde—designed to fire both .223 Rem and 5.56 NATO with exceptional accuracy.

This upper is more than just quality components—it’s about proper assembly. From the nitrided steel gas block (not phosphate or aluminum) to the nitrided A2 muzzle device, every part is installed with attention to detail. We use Permatex 242 on key fasteners and AEROSHELL 33MS anti-seize on both the barrel nut and muzzle threads, ensuring long-term reliability and consistent torque values.

While the BCG and charging handle are not included, this upper is ready for your preferred components and is backed by a Limited Lifetime Warranty. Sub-MOA performance is guaranteed with match-grade ammo and proper shooting technique—whether you’re training, hunting, or going for tight groups on the range.

Specifications

• Barrel Finish: Stainless
• Barrel Profile: Spiral Fluted
• Cartridge Compatibility: .223 Wylde
• Barrel Length: 18″
• Gas System Length: Mid-length
• Twist Rate: 1:8
• BCG / Charging Handle: Not Included
• Handguard: American-Made M-LOK (style may vary)
• Made in the USA

If you’re after precision, reliability, and American-made performance in a premium upper assembly, this .223 Wylde build is ready to deliver.